Traditional Culture Encyclopedia - Weather inquiry - (20 12? Xiao Ming investigated the daily weather in this area in April and counted the days of sunny, cloudy, cloudy and rainy days.

(20 12? Xiao Ming investigated the daily weather in this area in April and counted the days of sunny, cloudy, cloudy and rainy days.

( 1)30×(20%+ 10%),

=30×3 10,

=9 (days);

There are nine rainy days in this area in April.

(2) 1-20%- 10%-(20%+ 10%),

= 1-60%,

=40%;

30×40%= 12 (days);

A: Sunny days account for 40% of the total days this month, which is 12 days.